Align elements in QHBoxLayout

http://ompldr.org/vOTNycQ/tabbar.png
On the picture — QToolBar with QAction, QTabBar and QToolBar with QToolBar and QAction. All of them are placed inside QHBoxLayout. One can see on the picture that QAction and QToolBar are located a little bit lower than QTabBar. Is it possible to align them? I mean raise slightly QToolBar's or raise QAction in order to make them more tidy.